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   tc    ( 8 )

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Q-события (Qevents)

Qdiscs may invoke user-configured actions when certain
       interesting events take place in the qdisc. Each qevent can
       either be unused, or can have a block attached to it. To this
       block are then attached filters using the "tc block BLOCK_IDX"
       syntax. The block is executed when the qevent associated with the
       attachment point takes place. For example, packet could be
       dropped, or delayed, etc., depending on the qdisc and the qevent
       in question.

       For example:

              tc qdisc add dev eth0 root handle 1: red limit 500K avpkt
              1K \
                 qevent early_drop block 10
              tc filter add block 10 matchall action mirred egress
              mirror dev eth1